Improvement in rolls for welding plow-irons



' Illinois, have invented a new and valuable Im- 3, 4, and 5 are. details ot thesame.

. and novel arrangement lot suitable Welding` jonrnaled 'B indicates a plain roll', having -collar, g, is formed on this roll4 next the jour lSTITE'D' STATES WILLIAM M. wA'rsoN,

PATENT" OFFICE.

on ToNIoA, ILLINOIS.

- iMPuovEMENT |N- RoLLs,FoR"wE-LD|NG PLow-iRoNs.,

Specification forming partof Letters Patent No. 158,657, dated January 12, 1875 application tiled i AApril 12, 1873i To all whom 'it may concern Be it known thatv I, W. MEDD WATSON, of

Tonica, in the county of La Salle and State of provement'in the Manufacture of Flows; and- I do hereby declare that the following is a full, clear, and exact description of the construchad to the .annexed drawings. making a part of this specification, and to the letters and iigures of reference marked thereon.

Figure l of the drawings is a-representation of a sectional view of my invention. Figs. 2,'

' This invention has relation to an improved means for welding a double-shin mold-board er-sheremld itconsists-in the construction rolls, as hereinafter more fully set forth.v

The object ot' this invention' is to force the Weld-pieces together with a steady, powerful, and uniform pressure, which will 'condense the iibers of the metal, .and prevent blisteringby forcing the air ont. l v

In the` accompanying drawings, the letters A A indicate the frame in which the rolls are the journals a aand the ends b b projectingv beyond each standard, one end, b', forming the roll itself, and the other end, b, bei-n g prof vided with suitable operating-gear o; or the e'nd b may be provided with a hardened sleeve, keyed thereto and forming the roll-face. C designates the grooved roll, havingthe journals dd and the geared projectingend e. A

nal. Next the collar is the deep beveled groove h for the reception of the shin, thesurface k of the roll next this groove being arranged at a suicient distance from the surface of the plain roll, to allowthe passage of the moldfboard or share. This roll C projects beyond the standard, and forms a part oftheshaft journaled thereto; or its rolling face may consist of ahardened cylinder keyed to the projecting endof the shaft, as above described.

The beveled groove h of the roll C may extend entirelyr around its circumference, as indicated in Figs. 1 and 3, if it be desired tcforge the double shin in av particular form after welding. I prefer, however, to-form the'double shin by means of the rolls in the weldin g operation, and therefore usually employ a roll having theV eccentric. groove h extending partially aroundthe roll C, and gradually rising tothe cylindricalsurface thereof,'as indicated in Figs. 2and 4. When partially grooved, in the manner indicated, the roll will form the double shin withthe proper bevel at its side and end. V

The appearance of the share-plate u and 'shin-plate z when undergoing the rolling operation is indicated in Fig. 5 of the drawings.

The Voperating partof the rolls being outside of the bearings, there is no d-iiculty'inoperating on the edge ofthe widest plate. .The 'rolls are driven in the ordinary. manner. In theirapplication the `moldboardor share is cut in proper shape, and a piece of steel for the double shin,.also cut in proper shape, is

laid on the shin of the mold-board or the share, and both are -heated to the proper welding heat. Then they are placed between the rolls and welded, and, if the proper degree of so- 'lidity is not attained, the welded parts should be run between another pair of'rolls set nearer together; or the mold-'board or share can he cut of extra length, doubled over and'welded, if thought desirable v What I claimv as new, and desire to secure i Y by Letters Patent, is

The roll C, provided withY the eccentric groove h and collar y, in combination with the plain roll B, for the purpose of welding a stantially asset forth.

In testimony that I claim the above,-I have hereunto subscribed my name inthe presence of two witnesses.

WILLIAM MEDD WATSON.

Witnesses J. S. UNDERHILL, ALF. HEATH.

`double shin on the mold-board or share, subl 

